# US 2020/0400151 A1 · Activity pool axial flow pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0400151 A1 - Document ID: US20200400151A1 - Status: Published application - Kind: A1 - Application number: 17/010,815 - Filed: 2020-09-02 - Published: 2020-12-24 - Earliest claimed: 2019-04-10 - Assignees: Af5, LLC - Applicants: Af5, LLC - Inventors: Mark Allred - Web page: https://patentgrep.com/patent/US20200400151A1 ## CPC - F04D 3/02: of screw type - F04D 25/0686: {specially adapted for submerged use} - A63B 69/0093: {for surfing, i.e. without a sail; for skate or snow boarding} - A63B 69/125: {Devices for generating a current of water in swimming pools} - E04H 4/1245: {Recirculating pumps for swimming pool water} - F04D 13/08: for submerged use - F04D 19/00: Axial-flow pumps (F04D21/00 takes precedence; {pump comprising axial flow and radial flow stages F04D17/025}) - F04D 29/548: {Specially adapted for liquid pumps (F04D29/56 takes precedence)} - E04H 4/0006: {Devices for producing waves in swimming pools (generating current of water in swimming pools A63B69/125)} - F05D 2250/52: Outlet - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract Some embodiments include an axial flow pump for a activity pool. An axial flow pump, for example, may include a water reservoir and a pump body disposed within the water reservoir. The pump body may include a shaft seal, a water flow intake, and a water flow output. The axial flow pump, for example, may also include an impeller disposed within the pump body between the water flow intake and the water flow output; an electric motor disposed external to the pump body and external to the water reservoir and a shaft that is coupled with the electric motor, extends into the pump body through the shaft seal and is coupled with the impeller such that the electric motor rotates the impeller causing water to flow into the pump body through the water flow intake and forcing the water to exit the pump body through the water flow output. ## Claims ### Claim 1 An axial flow pump for a activity pool, the axial flow pump comprising: a water reservoir; a pump body disposed within the water reservoir, the pump body comprising: a shaft seal; a water flow intake; and a water flow output; an impeller disposed within the pump body between the water flow intake and the water flow output; an electric motor disposed external to the pump body and external to the water reservoir; and a shaft that is coupled with the electric motor, extends into the pump body through the shaft seal, and is coupled with the impeller such that the electric motor rotates the impeller causing water to flow into the pump body through the water flow intake and forcing the water to exit the pump body through the water flow output. ### Claim 2 (depends on 1) The axial flow pump according to claim 1, wherein the water reservoir comprises a water fill level indicating the level where water fills the water reservoir; wherein the electric motor is disposed above the water fill level; the wherein the pump body is disposed below the water fill level. ### Claim 3 (depends on 1) The axial flow pump according to claim 1, wherein the water reservoir is at least partially filled with water and wherein the electric motor is not disposed within the water and the pump body is disposed within the water. ### Claim 4 (depends on 1) The axial flow pump according to claim 1, further comprising one or more shaft supports disposed within the pump body and coupled with the shaft to allow the shaft to rotate and remain aligned between the electric motor and the impeller. ### Claim 5 (depends on 1) The axial flow pump according to claim 1, further comprising one or more stater veins disposed between the water flow intake and the impeller. ### Claim 6 (depends on 1) The axial flow pump according to claim 1, further comprising one or more stater veins disposed between the impeller and the water flow output. ### Claim 7 (depends on 1) The axial flow pump according to claim 1, wherein the impeller comprises one or more metals from the group consisting of brass, stainless, nickel, aluminum, and bronze. ### Claim 8 (depends on 1) The axial flow pump according to claim 1, wherein the impeller comprises a non-metal composite material. ### Claim 9 (depends on 1) The axial flow pump according to claim 1, further comprising a speed reducing box coupled with the motor and the shaft, the speed reducing box reduces the rotational speed of the shaft and the impeller with respect to the rotational speed provided by the motor. ### Claim 10 (depends on 1) The axial flow pump according to claim 1, wherein the impeller comprises an impeller flange and a plurality of impeller blades, the impeller flange may be coupled with the shaft and the plurality of impeller blades. ### Claim 11 (depends on 1) The axial flow pump according to claim 1, wherein in the shaft is disposed perpendicular relative to the direction of the water flow as it exits the pump body via the water flow output. ### Claim 12 An axial flow pump for a activity pool, the axial flow pump comprising: a pump body comprising: a shaft seal; a water flow intake; and a water flow output; an impeller disposed within the pump body between the water flow intake and the water flow output; an electric motor disposed external to the pump body; and a shaft that is coupled with the electric motor, extends into the pump body through the shaft seal; and is coupled with the impeller such that the electric motor rotates the impeller causing water to flow into the pump body through the water flow intake and forcing the water to exit the pump body through the water flow output. ### Claim 13 (depends on 12) The axial flow pump according to claim 12, further comprising one or more shaft supports disposed within the pump body and coupled with the shaft to allow the shaft to rotate and remain aligned between the electric motor and the impeller. ### Claim 14 (depends on 12) The axial flow pump according to claim 12, further comprising one or more stater veins disposed between the water flow intake and the impeller. ### Claim 15 (depends on 12) The axial flow pump according to claim 12, further comprising one or more stater veins disposed between the impeller and the water flow output. ### Claim 16 (depends on 12) The axial flow pump according to claim 12, wherein the impeller comprises one or more metals from the group consisting of brass, stainless, nickel, aluminum, and bronze. ### Claim 17 (depends on 12) The axial flow pump according to claim 12, wherein the impeller comprises a non-metal composite material. ### Claim 18 (depends on 12) The axial flow pump according to claim 12, further comprising a speed reducing box coupled with the motor and the shaft, the speed reducing box reduces the rotational speed of the shaft and the impeller with respect to the rotational speed provided by the motor. ### Claim 19 (depends on 12) The axial flow pump according to claim 12, wherein the impeller comprises an impeller flange and a plurality of impeller blades, the impeller flange may be coupled with the shaft and the plurality of impeller blades. ### Claim 20 (depends on 12) The axial flow pump according to claim 12, wherein in the shaft is disposed perpendicular relative to the direction of the water flow as it exits the pump body via the water flow output. ### Claim 21 (depends on 12) The axial flow pump according to claim 12, further comprising a water reservoir; wherein the water reservoir comprises a water fill level indicating the level where water fills the water reservoir; wherein the electric motor is disposed above the water fill level; the wherein the pump body is disposed below the water fill level. ### Claim 22 (depends on 12) The axial flow pump according to claim 12, further comprising a water reservoir; wherein the water reservoir is at least partially filled with water and wherein the electric motor is not disposed within the water and the pump body is disposed within the water.